Head Office No.10, Yanping S. Rd., Zhongzheng Dist., Taipei City 10043, Taiwan (R.O.C.) TEL:02-2371-1131~1139 Abrasives Business Unit No.64, Zhongshan Rd., Yingge Dist., New Taipei City 23942, Taiwan (R.O.C.) TEL:02-2679-1931~1940 Diamond Business Unit No.64, Zhongshan Rd., Yingge Dist., New Taipei City 23942, Taiwan (R.O.C.) TEL:02-2679-1931~1940 Opto-Electronics Business Unit No.6, Wenhua Rd., Hukou, Hsinchu Ind. Park, Hsinchu County 30352, Taiwan (R.O.C.) TEL:03-598-4990 Semiconductor Materials Business Unit No.260, Shixing Rd., Zhubei City, Hsinchu County 30286, Taiwan (R.O.C.) TEL:03-550-7160~7165 R&D Division No.64, Zhongshan Rd., Yingge Dist., New Taipei City 23942, Taiwan (R.O.C.) TEL:02-2679-1931~1940